/Engine/Source/Runtime/Engine/Classes/Components/SceneComponent.h
Attach this component to another scene component, optionally at a named socket. It is valid to call this on components whether or not they have been Registered, however from constructor or when not registered it is preferable to use SetupAttachment.
True if attachment is successful (or already attached to requested parent/socket), false if attachment is rejected and there is no change in AttachParent.
bool AttachToComponent ( [USceneComponent](API\Runtime\Engine\Components\USceneComponent) * InParent, const [FAttachmentTransformRules](API\Runtime\Engine\Engine\FAttachmentTransformRules) & AttachmentRules, [FName](API\Runtime\Core\UObject\FName) InSocketName )